CN205494565U - Low remaining syringe that dispenses of liquid medicine - Google Patents

Low remaining syringe that dispenses of liquid medicine Download PDF

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Publication number
CN205494565U
CN205494565U CN201521027003.0U CN201521027003U CN205494565U CN 205494565 U CN205494565 U CN 205494565U CN 201521027003 U CN201521027003 U CN 201521027003U CN 205494565 U CN205494565 U CN 205494565U
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CN
China
Prior art keywords
piston
syringe
liquid
cylinder
extrusion
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Active
Application number
CN201521027003.0U
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Chinese (zh)
Inventor
邹小龙
魏智娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI BAODAO MEDICAL EQUIPMENT CO Ltd
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SHANGHAI BAODAO MEDICAL EQUIPMENT CO Ltd
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Application filed by SHANGHAI BAODAO MEDICAL EQUIPMENT CO Ltd filed Critical SHANGHAI BAODAO MEDICAL EQUIPMENT CO Ltd
Priority to CN201521027003.0U priority Critical patent/CN205494565U/en
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Publication of CN205494565U publication Critical patent/CN205494565U/en
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Abstract

The utility model discloses a low remaining syringe that dispenses of liquid medicine, including cylinder subassembly and piston assembly, the cylinder subassembly includes the cylinder main part, connects the spliced pole and the cylinder handle of syringe needle, piston assembly is including piston rod and the piston handle of taking the piston, the piston lateral wall on to be provided with at least round sealed protruding stupefied, when the piston pushes away to the top, the space that forms between sealed protruding stupefied, piston up end and the cylinder main part is liquid storage part, the cylinder main part on be provided with with liquid storage part shape, size and the position assorted portion of extruding. The utility model discloses following beneficial effect has: 1, through the improvement to the cylinder main part, be provided with in the cylinder main part with the liquid storage part assorted portion of extruding, can be effectively extrude the cylinder with liquid storage part's residual medicine liquid, reach low residual medicine liquid 's purpose, 2, extrude the pole through setting up on the piston up end, realize extruding the cylinder main part with the liquid medicine in the spliced pole, reach low residual medicine liquid 's purpose.

Description

A kind of dispensing injector with pin of low liquor residue
Technical field
This utility model relates to a kind of dispensing injector with pin tool, is specifically related to the dispensing injector with pin of a kind of low liquor residue, belongs to In technical field of medical instruments.
Background technology
The most common making up a prescription, anaesthetize and instrument used for injection, most use syringes, syringe generally comprises and includes Syringe, syringe handle, the piston rod of band piston and piston handle.During piston rod pumpback, in syringe, form negative pressure, thus will Medicinal liquid sucks syringe;When pushing away before piston rod, piston is by medical liquid squeezing syringe.In view of the sealing of piston, existing piston It is provided with a circle seal convexity on sidewall, increases the seal of piston and syringe.Therefore, some problems are created: 1, seal Form space between protruding upper end and syringe, cause syringe inner liquid medicine residual too much;2, head face hump formula syringe, due to syringe end Face is protruding, and forms space between piston, causes liquor residue;3, the connection post void of syringe front end connecting needle is relatively big, Cause liquor residue.And regulation 10ml specification maximum residue limit is 0.20ml in GB25820-3002 syringe GB, 2ml specification Following maximum residue limit is 0.07ml.Dispensation injection needle the most on the market, can not meet requirement mostly.
Summary of the invention
The invention aims to provide the dispensing injector with pin of a kind of low liquor residue, to solve the above-mentioned of prior art Problem.
It is an object of the invention to be achieved through the following technical solutions.
The dispensing injector with pin of a kind of low liquor residue, including syringe assemblies and piston component, described syringe assemblies includes pin Cylinder main body, the connection post of connecting needle and syringe handle;Described piston component includes piston rod and the piston handle of band piston;Described It is provided with at least one circle on piston side wall and seals convex stupefied;When piston is pushed into top, convex stupefied, the piston upper surface of described sealing and pin The space formed between cylinder main body is liquid storing part;It is provided with in described syringe main body and liquid storing part shape, size and location phase The extrusion portion of coupling.
Mould is passed through by syringe main body one-body molded when described extrusion portion is produced.
Described piston upper surface is additionally provided with extrusion bar, described extrusion bar be connected post cavity shape, size and location Match.So that the residual liquor extrusion that will connect in post.
The method have the advantages that 1, by the improvement to syringe main body, be provided with in syringe main body and store up The extrusion portion that liquid portion matches, effectively can extrude syringe by the residual liquor of liquid storing part, reach the purpose of low-residual medicinal liquid;2、 By arranging extrusion bar on piston upper surface, it is achieved by connecting the medical liquid squeezing syringe main body in post, reach low-residual medicinal liquid Purpose.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
In figure: 1, syringe main body 2, connect post 3, piston 4, piston rod 5, seal convex stupefied 6, liquid storing part 7, Extrusion portion 8, extrusion bar.
Detailed description of the invention
The construction features of the present invention is expanded on further below in conjunction with the accompanying drawings with specific embodiment.
The dispensing injector with pin of a kind of low liquor residue as shown in Figure 1, including syringe assemblies and piston component, described syringe Assembly includes syringe main body 1, the connection post 2 of connecting needle and syringe handle;Described piston component includes the piston rod 4 of band piston 3 And piston handle;It is provided with at least one circle on described piston 3 sidewall and seals convex stupefied 5;When piston 3 is pushed into top, described sealing Convex space stupefied 5, that formed between piston 3 upper surface and syringe main body 1 is liquid storing part 6;Be provided with in described syringe main body 1 with The extrusion portion 7 that liquid storing part 6 shape, size and location match.
Described extrusion portion 7 is one-body molded by mould when syringe main body 1 produces.
Described piston 3 upper surface be additionally provided with extrusion bar 7, described extrusion bar 7 be connected the cavity shape of post 2, size Match with position.So that the residual liquor extrusion that will connect in post 2.
Dispensing injector with pin after being improved by this structure, the liquor residue amount of 2ml specification is less than or equal to 0.02ml;10ml The liquor residue amount of specification is less than or equal to 0.05ml.The liquor residue amount of other each specifications all declines to a great extent, and at least declines 50%.

Claims (3)

1. a dispensing injector with pin for low liquor residue, including syringe assemblies and piston component, described syringe assemblies includes syringe Main body, the connection post of connecting needle and syringe handle;Described piston component includes piston rod and the piston handle of band piston;Its feature exists In: it is provided with at least one circle on described piston side wall and seals convex stupefied;When piston is pushed into top, convex stupefied, the piston of described sealing The space formed between upper surface and syringe main body is liquid storing part;It is provided with in described syringe main body and liquid storing part shape, big The extrusion portion that little and position matches.
The dispensing injector with pin of a kind of low liquor residue the most according to claim 1, it is characterised in that: described extrusion portion leads to Cross when syringe main body produces one-body molded by mould.
The dispensing injector with pin of a kind of low liquor residue the most according to claim 1, it is characterised in that: described piston upper end Face is additionally provided with extrusion bar, described extrusion bar be connected post cavity shape, size and location matches.
CN201521027003.0U 2015-12-10 2015-12-10 Low remaining syringe that dispenses of liquid medicine Active CN205494565U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521027003.0U CN205494565U (en) 2015-12-10 2015-12-10 Low remaining syringe that dispenses of liquid medicine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521027003.0U CN205494565U (en) 2015-12-10 2015-12-10 Low remaining syringe that dispenses of liquid medicine

Publications (1)

Publication Number Publication Date
CN205494565U true CN205494565U (en) 2016-08-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201521027003.0U Active CN205494565U (en) 2015-12-10 2015-12-10 Low remaining syringe that dispenses of liquid medicine

Country Status (1)

Country Link
CN (1) CN205494565U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105597194A (en) * 2015-12-10 2016-05-25 上海宝舜医疗器械有限公司 Dispensing syringe with low residual medicine liquid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105597194A (en) * 2015-12-10 2016-05-25 上海宝舜医疗器械有限公司 Dispensing syringe with low residual medicine liquid

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